Grain-drill.



1. B. BUSHNELL.

GRAIN DRILL.

APPLICATION FILED JAN. 20. 1913.

Patented Feb. 15, 1916.

2 SHEETS-SHEET I co UMBIA PLANOGRAPM cu 1. B. BUSHNEYLL. Y

GRAIN DRILL.

APPLlcATloN FILED 1AN.20, 1913.

l 171,925 Patented Feb. 15,1916.

2 SHEETS-,SHEET 2.

' @ZM/WZ?? mm@ wf @MW THE COLUMNA PLANDURAPH p0., WASHINGTDN. D. c.

`JOHN B. BUSHNELL, OF MINNEAPOLIS, IMI,1\TN1E`SO'.I.A.

. GRAIN-DRILL.

. i .Specification of Letters Patent.

Application filed January 20, 1913. Serial No. 743,093.

To all whom t mag/concern.'

Be it known that I, JOHN B. BUSHNELL, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and `State of Minnesota,` have invented certain new and useful Improvements in Grain- Drills; and I do hereby declare the followingto be afull, clear, and exact description of thev invention, such as will enable others Vskilled in the art to whichrit appertains to make 4and use the same. Y

lvlycpresent invention relates to gra-n drills or seeding machines having furrow opening and seed depositing devices, and has for its object to improve .the same in*A the several particulars hereinafter described.

In some respects, the present invention is 4especially designed as anl improvement on the grain drill disclosed and claimed in my Vprior United States Patent 1,031,167, of

date, July 2, 1912, but it involves a covering and ground pulverizlng device 1n the nature of a harrow att-achment ,whichv V1s V.adapted for applicationgenerally to drills or vseeding machines having seed legs or boots and vfurrow opening devices.

In the accompanying drawings which Villustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a perspective view showing the complete furrow opener; Fig. 2 is a side elevation of the parts shown in Fig. 1; Fig. 3 is a plan view of the improved furrow opener; Fig. l is a view partly in frontelevation andpartlyin vertical section on the line :n4-* on Fig. 3;

and Fig. 5 is a horizontal sectionltakenon the line -s von Fig. v2.

. The numeral 1 indicatesafdrag bar which, as shown, ismade up of a rpair .of flat metal bars spaced apart by washers'Q and tiedtogether by bolts 3. A'Iheinembers of the drag bar 1, at theirrear ends, fstraddle a heavy Vdraft lug 4 of a tubular seed leg' or boot=5 and are pivotally connected to 'said lug by a bolt j6. `Another nut-equipped'bolt 7,' passed through perforations inthe two members of the drag bar 1*andthroughasegmental slot 8in the lug 4, serves to rigidly connect the said leg 5 to the drag bar 1 with freedomY for adjustments on the bolt 6. Thisadjustment is important, as lwill hereinafter appear. The lower end of the said boot `5 terminates in `flanges 9 thatV are rivetedfor otherwise vfri, ,ridly secured to approximately Vparallel flat laterally spaced so-called land side Patented Feb. 15,1916.

plates 10. The front edge of lone land side plate 10 extends ahead of the other. and a forwardly'and laterally inclined plow point plate 11 'is riveted or otherwisel rigidlyfsecured` to the front siderof the lower. end of theboot 5. The lower edge of this :plow point Yplate 11 extends considerably below Athe horizontalllower'edges of the -land side plates V10. lThe downward extension of the plate 11l better adapts the shoe to enter the ground.

In'connection withtheshoe, I provide a sharp edged rolling` colter, preferably in the vform of steel disk 13, journale'd at 14 to the lower end of a supporting bar 15,

,mounted "for vertical movements through suitable jguides on a `bearing lbracket 16, which 'latter is riveted, cast or otherwise rigidly secured tothe said leg,5.1 This flat idisk 13is located ina vertical plane thatY exltends .paralleljtothe line of draft, and its rear lower portion closely engages the plow pointplate 11. The lower edge of the colter disk -13`should/run below the lower edge of the 'plow' point plate 11,' so thatit will out through the ground and lthrough obstructions suchas n Acorn stalks, leaving the lshoe to form@ its `:own furrow. Otherwise'stated, the furrow is not formed by the disk 13, butJ the said disk Simplycuts through the ground at oneV side 'of the shoe, and leaves the shoeto form its own furrow. The inner 'face of the disk 13 will be partly cleaned bythe plow pointV plate '11 of thefsh'oe, but themain portion thereof "is kept clean by ascraper 17, applied to the lower end of the supporting bar 15. A rod 18 attached tothe upperend of the barl 15 is v"extended through the usual presser arm, `not shown, and afcoiled'spring 19 `on the said l rodis Vcompressedbetween', the varm andra washer 'or lcollar 2O `on said rod and yieldingly presses 'thebar 15,v and hence, the col- Vter 13 downward. The extreme downward ioog4 movement'pfthe disk 13 infre'spectto the' shoe is limite'd'byvthe lower'end of the rod 18 that is engageable with one ofthe drawbars .1. Secured to the `,bar 15 is an upwardly v extended frod Q2. On this rrod is 'a coiled `spring 123 'that exerts af'downw'ar'd pressure' onithedrag bar 1. j y .f

The tendency of the shoe to cut deep into 5 the ground or to forma deep furrow may vbeY i Lincreased'fby van ad]ustment increasing Vthe 'angle-betweenth'e drag bar -1 andthe said v fleigr, and ,cOnverseIy, ...this tendency. mayl be shoe.

yielding connection provided between the` decreased by a reverse adjustment, which adjustments are, of course, accomplished when the bolt 'l'` is loosened., It lwill be.l

understood that, under equal downward pressure, the disk 13 will cut its way into.

the ground much more quickly than the This is theY reason why there is a after the drill has been raised by an ob' struction in the ground.

j @The furrow formed by the shoefwill have a level approximately flat bottom onto which the seed, deposited in the furrow, is lscattered or spread out, and thus sowed at a perfectly uniform depth. The colter disk will cut through all trash such as: corn stalks or small roots and thus prepare the ground for the passage of the shoe. In the arrangement illustrated, the bar 15 is bifurcatedA and the disk hub is journaled to the lower ends of the prongs thereof, but` this constructiomof course, maybe varied.` Tt is highlyv important to note that the plow point of the shoe works Vbelow the lower edge of the shoe and that the disk or colter works below the lower edge or end :ofthe plow point. K that Vthe plow orplow point plate 11,1especially at its lower portion, have a very cl-ose' engagement with the disk, so that it will scrape dirt and other adhering matter from the diskfand prevent it from working between the disk and plow point.

elements 11 and 13. The projection of the plow point plate below the lower edge or permit shoes having horizontalbottoms, to

be vpressed into the ground. With the disk arranged Vtolcut below the lower end of the A plow point, weeds or trash will be; either cut. through or depressed :below the plow point,.so that in either instance,-they will ,not becaught and dug upfbyy the plow point. AThe above noted relative arrangementof Vthe parts 10, 11 and 13, is clearly shown in Fig. 2.

As a -highly improved devicel for cover- -ing the furrow and pulverizing Athe ground,

I employ a downwardly spring pressed fork which is pivotally lconnected to the said leg for boot, and operates somewhat like a sloping toothed harrow. The tines ofthe socalled cover fork are preferably in the form of light rods 24, the upper frontv ends of .which are rigidly-'secured to a flange head 25 that is pivotally connected by a bolt 26,

to a base bracket '27. This socalled base` bracketQv is secured to a lug-28 onithe:

Tt isalso, of course, important j Fig. 5` A shows` this close engagement between. the

lowerrear portion of the said leg 5, with freedom for vertical adjustments, as shown, byY -means of a nuteequipped bolt 29., the said bracket 26 having a vertical slot per` mitting such adjustments. On the hinge bolt 26 is a double coiledtorsion spring 3G that reacts against the .base bracket 27. and

against the head 25 with a force that yieldingly holds the lower rear ends of the tines or rods 2% pressed into contact with 7the ground under the desired. pressure. The

`extreme downward movement ofthe tines 25. Also, as shown, the ends of the spring.

30 react against'the said 4bolt 31. This arrangement of the spring and stop may, of

course, be very greatly modified,y butthe general type of torsion spring isv important,

because the tensionof the said spring is not varied much by the eXtreme movements.

imparted l.to the covering deviceV or fork, due to irregularities in the ground surface. A covering device of this character. will scrape the earthin'to the furrow and, will pack the same below the surface, but will ,pulverize the ground and leave a loose finely pulverized topV soil surface, such asis much desired. in so-called dry farming,- and, inI` fact, for all kinds ofseeding.

This improved covering ldevice orrathe combined coveringl device and pulverizer. is

capable ofl use in connectionwwith different,

kinds of furrow openers. vFor instance,it

Vcan be used in connection.y with ordinary shoe orv hoeV drills, or in connection with double or single disk drills or furrow `open-A i ers having seed legs `or boots through which the seed .is deliveredinto the furrow.

- llhat I claim is: p

1. A-furrow openerforseeding :machines f comprising a seed. leg, a shoe at `the lower end of said leg-and constructed to. form a furrow vhaving an approximately flatvbot-l tom, and. provided with aplow point IeX- tended obliquely backward from one :side

thereof, anda disk working agains'tthat;

side of theshoe fromwhich said plow point the lower end of said leg and constructedl disk arranged to runy in close engagement with .said yplow pointv plateywith its lower edge projecting below the lower end pf said 1 vplowpoint plate.

l extends obliquely, .andextending below ythe `bottom of said shoe.l n l Y A furrowopener for seeding machines Vco'mprising a seed leg,a shoe connectedfto j `12u f to forma furrow having anapproximately .flat bottom, and provided lwith an oblique plow point plate -projecting'below the bot-w tom of said shoe, in bombination with ;al f

leg rigidly secured thereto and provided at its lower end with a shoe and having a forwardly projecting bearing, a disk support mounted for vertical movements in said forwardly projecting bearing7 a disk journaled to said disk support, and a yieldingr conneotion between said disk support and drag bar.' Y Y '-1. In an attachment for seeding machines, the combination with a drag bar, of a seed leg rigidly secured thereto and provided at its lower end with a shoe and having a forwardly projecting bearing, a disk sup-v Cogies of this patent may b obtained for ve cents each, by addressing the Commissioner of Patents,

in presence of two witnesses.

connection between said disk support and drag bar, and a scraper applied to thelower end of said disk support and arranged to clean the lower portion of said disk.VV

In testimony whereof I aiix my signature JoHN B; BUSHNELL. lVitnesses: l

BERNICE G. WHEELER,

HARRY D. KILGORE.

Washington, D. C. 

